Chapter 4 – Protein

Chapter 4 – Protein

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

Multiple Choice

d      K     87                   1.     Proteins differ from the other energy nutrients because they contain:

1. glycerol.
2. carbon.
3. fatty acids.
4. nitrogen.

c      K     87                   2.     Protein is:

1. unique in that it is the only dietary component that contains oxygen.
2. important primarily because it builds strong bones and teeth.
3. made up of 20 different amino acids.
4. made up of branches of amino acids combined with branches of glucose.

d      K     87                   3.     Proteins are comprised of chains of:

1. monosaccharides.
2. fatty acids.
3. ketones.
4. amino acids.

a      K     87                   4.     The component that distinguishes one amino acid from another is its:

1. side group.
2. backbone.
3. size.
4. shape.

a      K     87                   5.     If the shape of a protein is changed, the _____ of the protein is changed.

1. function
2. size
3. electrical charge
4. nutritional value

b      K     88                   6.     An essential amino acid:

1. is not necessary to the diet.
2. must be supplied by the diet.
3. can be made from glucose in the body.
4. can be made from fat in the body.

c      K     88, 97             7.     The term “non-essential,” as it applies to amino acids, means that:

1. the body does not require them.
2. they differ in their capacity to support growth.
3. the liver can produce those the body lacks.
4. they are not used to synthesize tissue.

c      A     88, 97             8.     Not all amino acids have to be supplied by food. This is true because:

1. not all necessary amino acids are found in food.
2. hormones furnish the missing amino acids.
3. the liver is able to manufacture some amino acids from others.
4. the liver is able to manufacture some amino acids from fatty acids.

a      K     88                   9.     How many essential amino acids are required by the adult?

1. 9
2. 16
3. 10
4. 22

b      K     88                   10.  Essential amino acids:

1. are found mostly in plant foods.
2. cannot be synthesized by the body.
3. cannot be supplied by the diet.
4. are the best source of energy for the body.

d      K     88                   11.  An example of a conditionally essential amino acid is:

1. valine.
2. leucine.
3. lysine.
4. tyrosine.

a      K     89                   12.  Which of the following is not one of the nine essential amino acids?

1. carnitine
2. phenylalanine
3. tryptophan
4. histidine